Fix for category stats to work with attachments
Fix for category stats to work with attachments

DirkHoffmann/indico,mic4ael/indico,mic4ael/indico,DirkHoffmann/indico,OmeGak/indico,indico/indico,pferreir/indico,mic4ael/indico,OmeGak/indico,mvidalgarcia/indico,OmeGak/indico,indico/indico,pferreir/indico,indico/indico,ThiefMaster/indico,DirkHoffmann/indico,ThiefMaster/indico,ThiefMaster/indico,mvidalgarcia/indico,indico/indico,OmeGak/indico,mic4ael/indico,pferreir/indico,ThiefMaster/indico,mvidalgarcia/indico,pferreir/indico,DirkHoffmann/indico,mvidalgarcia/indico